Related Rule
Argentina
Practice Relating to Rule 47. Attacks against Persons Hors de Combat
Argentina’s Law of War Manual (1989) forbids the refusal to give quarter. 
Argentina, Leyes de Guerra, PC-08-01, Público, Edición 1989, Estado Mayor Conjunto de las Fuerzas Armadas, aprobado por Resolución No. 489/89 del Ministerio de Defensa, 23 April 1990, § 1.06(4).
The manual also states: “It is prohibited … to make an enemy hors de combat the object of attack.” 
Argentina, Leyes de Guerra, PC-08-01, Público, Edición 1989, Estado Mayor Conjunto de las Fuerzas Armadas, aprobado por Resolución No. 489/89 del Ministerio de Defensa, 23 April 1990, § 1.06(5).
The manual further states that “attacks against persons recognized as hors de combat” are a grave breach of the 1977 Additional Protocol I and a war crime. 
Argentina, Leyes de Guerra, PC-08-01, Público, Edición 1989, Estado Mayor Conjunto de las Fuerzas Armadas, aprobado por Resolución No. 489/89 del Ministerio de Defensa, 23 April 1990, § 8.03.
Argentina’s Law of War Manual (1969) states: “It is prohibited to kill or injure an enemy who has laid down his arms or who is defenceless and has surrendered.” 
Argentina, Leyes de Guerra, RC-46-1, Público, II Edición 1969, Ejército Argentino, Edición original aprobado por el Comandante en Jefe del Ejército, 9 May 1967, § 1.006.
Argentina’s Law of War Manual (1989) prohibits:
making an enemy hors de combat the object of an attack, understood as any person who:
1) is in the power of his enemy.
2) clearly expresses his intention to surrender.
3) is incapable of defending himself.
provided that in any of these cases he abstains from any hostile act and does not attempt to escape. 
Argentina, Leyes de Guerra, PC-08-01, Público, Edición 1989, Estado Mayor Conjunto de las Fuerzas Armadas, aprobado por Resolución No. 489/89 del Ministerio de Defensa, 23 April 1990, § 1.06(5).
In its judgment in the Military Junta case in 1985, Argentina’s National Court of Appeals established that, in a situation of internal violence, “the combatants incapacitated by sickness or wounds shall not be killed and shall be given quarter”. 
Argentina, National Court of Appeals, Military Junta case, Judgment, 9 December 1985.